Impression or imitation-stitch machine.



A. O. SPENCER, IMPRESSION 0a IMITATION STITCH MACHINE. APPLIOATION FILEDMAY 10, 1907.

9 1 7, 84)? .7 Patented 13, 1909-.

I 1 r H Q Maw? 45 A; W A.

50 and to support UNITED STATES PATENT Prue" ALVAH O. SPENCER, OFBEVERLY, MASSACHUSETTS, ASSIGNQR TO UNITED MAOHIN EBY COMPANY, OFPATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY,

mrnnssxon on nurrn'rron-s'rrron Macrame.

Specification of Letters Patent.

I Patented April 13, 1909..

\ Application filed may 19, 1907. Serial No. 372,856.

10 will enable others skilled in theart to which it appertains to makeand use the same.

The present nvention relates to impression'or imitation stitch machineswhich are used in the'manufacture of boots and shoes .15 to produceornamental impressions upon the upper surface of the projecting edge ofthe sole and, which usually com rise an indenting tool provided withteeth s aped and spaced to: roduce the desired'form' of indentations- .2an

a work support for engaging the sole of a shoe'and supporting it againstthe thrust of the indenting tool. 7 The object of theinvention is toprovide a machine of his class in which the marghlal portion of the soleupon which the machine operates is uniformly supported by the .work 1ort againste the thrust of the indenting in suchmanner that theindentations me. be ra'ccuratel and uniformly produced .30 out danger odistorting or bending the marginal portion of the sole away from theupper and thus injuring the appearance of the boot or shoe. o p

In accordance withthe principal feature 4 sup 13 90 .3 the invention themarginal portion of tile sole is unirormly supported and its-uppersurface properly presented to the indenting tool by a work support. somounted and arranged that it automatically adapts itself 40 to thatportion of the sole with which it has engagement.- With the work supportthus mounted and arranged the upper surface of,

the work support automatically shifts to vaccommodate any variation inthe curvature ,or she e of the under surface of the sole so i that t esup ort always presents a bearing surface for t e sole properlypositioned to efiectively sustain and resist the thrust exerted upon thesole by the indenting tool the sole in such relation to the indentingtool that there is notendenoy for the indenting tool to bend themarginal portion-of the sole away from the upper and thus distort thesole so as to'inj-ure the ap tfi pearance of the boot or'shoe, A m chi eof the sole with Vt embodying this form of work support'may therefore besuccessfully employed upon-- shoes in which the sole of the shoe is notof uniform convexity throughout the length of that portion uponwhich-the aindentations'oo are made and underconditions where theemployment of work supports such "as have" heretefore been embodied inthis class of machines would result in a bendingor disto'rtion of themarginal portion of the sole or the Y I production of otherwiseimperfect work.

- The specific manner in which the work. support-1s mounted and arrangedso that it may automatically conform to the surface not essential andmay be varied as found desirable or expedient. It is desirablehowever,to so mount the work sup ort that it it isdirectly supported in line witthe thrust v exerted upon t e upper surface of the sole by the indentingtool andthis manner'of sup-. porting'the-work support formariadditionalfeature of the invention Broadly considered the invention contemevplates actuating therindenting tool many suitable manner to produce theindentations.

. Inthe preferred form of the invention how:

'even'the movements which are imparted to v the tool are substantiallyperpendicular to.

the-surface of the stock and are produced by 85.

hammer mechanism which causesgthetool to strike a series ofblows inrapid succession.

upon the work. g

The nlvention also contemplates the use of v any'sjuitable formoiindenting tooiflbut on account of the simplicity of construction thespeed at'which such machine can beep erated, a tool is preferably usedwhich is in-the form of a wheel prcyidedwith teeth shaped. and spaced toproduce the desired term of indentation and arranged to rotate to bringsuccessive teethinto engagement with the work, ,This wheel may be of theform which has heretofore beenused in impression or imitation stitchmachines and like such wheels is preferably mete-conical in shapes. withits base or larger diameter directed to ward the shoe upper in orderthat the indentations which are formed upon the shoe sole 7 may projectbeneath the outwardly bulging portion of the upper. I

The features of the invention will be clearly understood firemaninspection of the accompanying draunilngs, in 'which, v

Figure 1' is a view in side-elevation and ich it is in engagement is 70.

erase? T -iartl Y in section of the u or oortion of an i l impression orimitation stitch machine em- Fig. 3 is an elevation tate freely on astud 2 secured by means of a split clamp in the lower end of a toolcarrier 3. The indenting wheel is arranged to'act upon the projectingedge of a shoe sole as indicated in Fig. 1 and has its base or largerdiameter directed outwardly so that the portion of the wheel whichcontacts with the sole extends beneath the bulging portion of the shoeupper. The tool carrier 3 is mounted to slide vertically in a guidewayformed in the front portion of the overhanging head of the machine andwhen no work is in the machine assumes its lowest position under theforce of gravity. When the work is placed in the machine the toolcarrier is raised so as to bring its upper end into aposition to beacted upon by a rotating hammer mech anism. This hammermechanismcomprises a carrier i secured u on the forward end of a driving shaft 5and flaving mounted therein a series of cylindrical rolls 6 which duringthe rotationof the shaft and carrier act successively upon the upper endof the tool carrier. Upon the rear end of the driving shaft 5 aresecured fast and loose pulleys 7 and 8 by means of which a rapidrotation is impartedto the driving shaft. A belt shifter'l) serves as aconvenient means for shifting the belt from one pulley to the other tothrow the driving shaft into and'out of operation.

The shoe is supported against the thrust of the indentin tool by meansof a work sup port 10 whic. as shownin' the drawings is in the form of asmall circular plate. The work supportin plate 1.0 is formed on theupper end'of-a bTock 11 supported in the bifurcated end of a carrier 12by a pivot 13. The pivot 13 is arran ed with its axis'substantially inline with t e feed of-the sole, between the work support and wheel andthe work support is t erefore free to shift as the shoe is fed toaccommodate any variation in the lateral curvature of the under surfaceof the sole and thus automatically adapt itself to that portion of thesole with which it is in engagement and maintain its surface in properrelation with the indentin wheel. he pivot pin is also arranged directlyunder the indenting wheel 1 where it is in direct line with the thrustexerted upon the sole vby thev indenting wheel. The pivot pin thereforeprovides one form of means for supporting the work sup portso that itmay automatically adapt itself to the surface with which it is inengagement and by which the work support is directly supported in linewith the thrust exerted upon the sole by the indenting tool.

The front end. oi the wheel is inclosed by an upper guard consisting ofa plate21, extendlng across two arms, which are pivotally mounted uponthe frame of the machine so that the indentingitool can move verticallywithout exerting a rubbing action upon the shoe up )er which is held outof engagement therewith by means of the plate 21.

The work support carrier 12 is mountedupon a pivot pin 14 in the end ofan arm 15 and is provided with a nose 1-6 resting upon a bearing surface17 on the arm. The arm 15 may be supported and operated in introducingand removing the work in the usual manner. I

The nature and scope of the present invention having been indicated anda machine embodying the various features of the invene tion in theirpreferred form having been spe' ciiically described, what is claimedis 1. An impression or imitation stitch machine having in combination anindentlng tool arranged to act upon the upper surface of the projectingedge oft-he shoe, a work sup ort arranged-to engage the tread surface oft e sole and means for supporting the work support against the thrust ofthe tool while permitting it to move under the. force exerted by thetool on the work to automatically ada t itself to that portion ofthesole with which it is in engagement.

2. An impression or imitation stitch machine having in combination anindenting tool arranged. to act upon the'upper surface of theprojectingedge of the sole, means for causing the tool to strikea seriesof blows in port arranged to engage the treadisurface of the sole of ashoe and means for supporting the work support against the thrust of.the

tool while permitting it to move under the force exerted by'the tooloh'the work'to aurapid succession upon the work, a work supof theprojecting edge of the sole, means for v causing the wheel to strikeaseries of blows in rapid succession upon the work, ,a work .aupportarranged to engage the tread surface of the sole and means forsupporting the work support against the thrust of the wheel whilepermitting it to move'un-der the force exerted by the wheel on the workto'automatically adapt itself to the portion of the sole'with which itis in engagement.

4. Animpression or imitation stitch machine in combination indenting setupon the upper-surface the pi'ojeeting edge of the soie, Work iportarranged .-he surface of the sole, and support for the work sheport-i1].the line the thrust exerted upon portion of the sole projecting edge ofthe soie, and a work-sup:

port arranged to engage the tread surface of the sole and mountedfoffree -moVement under the force exerted by the tool on the Work aboutan axis in line with the feed of the Work to automatically adapt itselfto the portion of the sole with which it is in engagement.

6. An impression or imitation stitch me.-

ehine ha vin in combination an indentin Wheel arranged to engage theupper surface of the projecting edge efthe soieof a shoe, a Work supportarranged to engage the tread surfeeefoi the S010, e pivoted support forthe work support arranged in line with the thrust exerted upon the soleby the indenting Wheel and having its axis arranged in the directionofthe feed of the sole between the indenting wheel and Work support saidpivotel support permitting the work support to move under the forceexerted on the Work by the Wheel to automatically adept itself to theportion of the soie with which it is in. engegement. g

In testimony whereof I ethx my signature, in presence of two Witnesses.

ALVAH C. SPENCER.

\ -fitnesses I FREDERICK L EDMANDS, EMILE H. TARDIVEL.

